Cheapest return flights from Seoul to Ulaanbaatar in May from $236

AirHint found the following cheapest return flights from Seoul (ICN) to Ulaanbaatar (UBN) in May 2026 (see full year).

Return flights

10 May - 14 May Jeju Air direct
17 May - 28 May Jeju Air direct
24 May - 28 May Jeju Air direct
26 May - 28 May Jeju Air direct
07 May - 14 May Jeju Air direct
21 May - 26 May Jeju Air direct
24 May - 04 Jun Jeju Air direct
14 May - 17 May Jeju Air direct
07 May - 10 May Jeju Air direct
06 May - 10 May Asiana Airlines direct
27 May - 31 May Asiana Airlines direct
30 May - 06 Jun Asiana Airlines direct
30 May - 03 Jun Asiana Airlines direct
24 May - 03 Jun Korean Air direct
29 May - 01 Jun Korean Air direct

Also check the deals for one-way flights from Seoul to Ulaanbaatar in May.

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